body {
  background: #1a1a1a;
  color: #fff;
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 20px;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
}

h1 {
  text-align: center;
  margin-bottom: 30px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
  gap: 20px;
}

.card {
  background: #2d2d2d;
  padding: 20px;
  border-radius: 10px;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

h2 {
  margin-top: 0;
  margin-bottom: 20px;
  text-align: center;
}